Power Fc

[skylinecouple]

I have posted in the Power FC forum but hoping someone can help me here. So far I have added timing to most of the cells in the 7x7 range and have to say it has transformed the way the car drives.

Now I have reduced the values for cold starting in "cranking" of the setting mode and this has made a small difference. Starts a little easier but more importantly so much crisper when warming up. Is this the way to go ? Or should I trim in water correction ?

Also, when I accelerate hard at any revs I get a lot of unburned fuel like I mean seriously a big cloud of black smoke. My two favorite tuners reckon it is the Nismo injectors but I strongly suspect "accel" pump needs trimming but as there are two columns I don't know where to start. Anybody help ?

Edited August 18, 2009 by skylinecouple

[Dale FZ1]

You have the ability to alter what level of fuel enrichment is applied during cranking, and then post-cranking when the engine has fired.

It is interesting to see how changing some values by a small amount can make a big difference, particularly in those areas where you get generally colder ambients of a morning. Increasing ignition dwell time down in the cranking zone is another way of getting a stronger start.

I have a couple of files that may help - check email

Regarding the fuel burn, it would be useful to log the AFR on accel, and deduce if it's in the accel settings, or fuel map.

[skylinecouple]

Thanks Dale, I really want to nail this tune. Honestly, I thought all this time it was running great till I saw there was zero knock anywhere under 3,000rpm. I have a highest reading of 9 knock revving to 7,000rpm. That;s disgusting. I'm hoping when I get to the higher revs with more timing it may cure the dreaded black smoke syndrome. I doubt it but there is always hope.

But is accessing the cranking zone and reducing the injectors from say, 26ms to 18ms the right way to lean out the mixture during cold start? Should I be doing it in the water temp correction area instead ?